REFINERY CRACKING OPERATIONS RUN NO. 35 PREPARATION OF ROAD OIL CUTTTER MATERIAL RUN NO. 35A- REDUCTION OF VISBROKEN RESIDUUM TO ASPHALT (ROAD OIL PREPARATION)

Two refinery operations, runs Nos. 35 and 35A, are covered by this report. The purpose of run No. 35, July 19 and 20, 1951, was to submit a mixture of polymer, slop oil, and naphtha to a simple fractionation at atmospheric pressure to obtain suitable distillate stocks for road oil blending purposes. Run No 35A, from July 30 to August 3, 1951, was a modified atmospheric distillation in which the visbroken residuum charge stock was reduced to an asphalt for preparing road oil.